ModelCAD is a CAD system specifically designed for PC and scale modelers. In simple terms, ModelCAD is a computer tool for designing and drawing. ModelCAD has all the features you need to make complete sets of plans and print them to scale on items such as airplanes, boats, cars, and trains. Use the double-line commands or drawing wizard to perfect even the most complex design. It even prints out in panels for larger plans than your printer can normally print.